47109539 has 2 divisors, whose sum is σ = 47109540. Its totient is φ = 47109538.

The previous prime is 47109523. The next prime is 47109581. The reversal of 47109539 is 93590174.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47109539 - 2⁴ = 47109523 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47109239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23554769 + 23554770.

It is an arithmetic number, because the mean of its divisors is an integer number (23554770).

Almost surely, 2^47109539 is an apocalyptic number.

47109539 is a deficient number, since it is larger than the sum of its proper divisors (1).

47109539 is an equidigital number, since it uses as much as digits as its factorization.

47109539 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 47109539 is about 6863.6389036720. The cubic root of 47109539 is about 361.1627502080.

The spelling of 47109539 in words is "forty-seven million, one hundred nine thousand, five hundred thirty-nine".